/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 */

package opensocial.apps.friendforsale.command;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import opensocial.apps.common.Message;
import opensocial.apps.friendforsale.model.Player;

import org.apache.log4j.Logger;

/**
 * get all friend viewer can buy accept request friends=xxx,xxx,xxx,xxx
 * 
 * @author Sirius
 * 
 */
public class FriendListCommand extends FriendsaleBaseCommand {
  private static final Logger LOGGER = Logger
      .getLogger(FriendListCommand.class);

  @Override
  public boolean execute() throws Exception {
    String friends = request.getParameter("friends");
    if (friends == null) {
      LOGGER.error("friends list is null");
      output(new Message(MessageId.PLAYER_NOT_FOUND, null));
      return END;
    }

    Player viewer = this.getViewer();

    if (viewer == null) {
      LOGGER.error("viewer not found:" + ctn + " " + vid);
      output(new Message(MessageId.PLAYER_NOT_FOUND, null));
      return END;
    }

    this.hasError(false);
    List<Player> players = persist.loadFriends(viewer.getContainer(),
        convertFriendids(friends));
    Map<String, Player> friendmap = new HashMap<String, Player>();
    for (Player f : players) {
      friendmap.put(f.getUserId(), f);
    }
    output(friendmap);

    return false;
  }

  public String convertFriendids(String friendids) {
    String[] ids = friendids.split(",");
    StringBuffer ret = new StringBuffer();
    if (ids.length <= 0)
      return "";
    for (String id : ids) {
      ret.append("'").append(id).append("',");
    }

    return ret.substring(0, ret.length() - 1);
  }

}
